| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | FORM 4 | 01 Aug 2023 | 28 Jul 2023 | 000-17795 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 02 Aug 2022 | 29 Jul 2022 | 000-17795 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 02 Aug 2021 | 30 Jul 2021 | 000-17795 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 05 Feb 2021 | 03 Feb 2021 | 000-17795 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 04 Nov 2020 | 03 Nov 2020 | 000-17795 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 06 Aug 2020 | 04 Aug 2020 | 000-17795 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 03 Aug 2020 | 31 Jul 2020 | 000-17795 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 11 May 2020 | 07 May 2020 | 000-17795 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 13 Nov 2019 | 11 Nov 2019 | 000-17795 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 08 Aug 2019 | 06 Aug 2019 | 000-17795 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 06 Aug 2019 | 02 Aug 2019 | 000-17795 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 03 Aug 2018 | 03 Aug 2018 | 000-17795 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 01 Aug 2017 | 28 Jul 2017 | 000-17795 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 09 Nov 2016 | 08 Nov 2016 | 000-17795 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 09 Sep 2016 | 08 Sep 2016 | 000-17795 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 29 Jul 2016 | 28 Jul 2016 | 000-17795 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 28 Jul 2016 | 26 Jul 2016 | 000-17795 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 31 Jul 2015 | 29 Jul 2015 | 000-17795 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 30 Jul 2014 | 28 Jul 2014 | 000-17795 |